|“||You guys are making me sexy. You won't like me when I'm sexy!||„|
Duke Devlin is characterised as the most attractive male character in the series. Whenever he says or does something, the opening tune to "Sexyback" by Justin Timberlake will start playing out of nowhere. It's implied that he's bisexual, but he exclusively pursues women as he needs to have half-naked girls grinding up against him to stay alive. He may have had sex with Joey's sister Serenity.
Duke's game Dungeon Dice Monsters is frequently compared to Duel Monsters. Duke always denies these claims by stating that his game is completely different because it uses dice (Joey has two Duel Monsters cards that require dice to use). It gets to the point where Duke makes plans for a city-wide tournament where players must wager their most valuable dice, mere moments after Batlle City ended.
Duke's lack of creativity would get him a job with EA.